For the application of capability maturity model for software/ capability maturity model integration (CMM/CMMI), it is difficult to use methods of artificial statistic and analysis in software process management, so the software process management system (SPMS) based on service oriented architecture (SOA) has been developed. Analyzed the necessity and feasibility of its. The system architecture, services, and database were designed by combining SOA and CMM/CMMI model, and workflow technology and the MVC architecture were used for the system services. Practice has proved that the system will help software development organizations collect data, storage data, analyze data in the process of development, and improve efficiency of decision-making and analysis.